OK, Saeed’s post and work on barrel tuning has cranked rusting gears and I may as well spin them a bit here.
We all agree I think that barrel vibrations are real and that if we could understand (control) them better we could improve accuracy. I have shot archery for years and the vibration controls that have been introduce in that sport are revolutionary. Bows shoot quieter, and accuracy has been enhanced through the use of vibration dampening devices – so my question -- would the same devices dampen and improve rifle accuracy.
I saw a post on a web site this week of just such a device that is being produced by one of the archery manufacturers for rifle barrels. I haven’t been able to relocate the site and am wondering if anyone here is familiar with it. The picture of the thing looked like three donuts stacked one on top of the other, one being quite a bit larger than the other two; this whole assembly was slipped on the barrel, resting just in front of the forend.
I would like to see opinions on the possibilities of using vibration dampening devices. Is there anyone familiar with any research in controlling barrel vibrations by dampening. I would really like to follow-up on this technology.

Brassbender

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We all agree I think that barrel vibrations are real and that if we could understand (control) them better we could improve accuracy.

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Well.....maybe we all don't agree......I for one agree vibrations exist but that allowing them to repeat uniformly is the key and not "controlling" them.

As to damping I'm interested and will follow this thread but please don't think "we all agree' that anysort of control is the key.

The "tuner" is made by Limbsaver and sells for $20. I'd like to hear from anyone who has tried one.

I think uniform barrel vibration produces accuracy. That is the major reason we add thicker barrels to target rifles. It makes the barrel stiffer and reduces the amount of deflection in the barrel. If everything else is equal less vibration is more likely to be uniform.

Controling the vibs is only half the battle, we have to have the bullet exit the barrel at the same point in the barrels travel also, so even velocity plays a part in it.

http://www.speakeasy.org/~cdlong/shock%20wave%20theory%20summary%20explanation.htm This guy did some research on barrel vibration and accuracy

I have not tried the "LimbSaver" tuner but, I do have a "Biathlon Stabilizer" in my Mini-30. http://www.henrich3.com/biathalon_stabilizer.htm
This device has taken a 2.5 to 3 inch rifle and turned into a sub MOA tack driver. It was originally designed to the Biathlon Shooting team, and it works. As most of you know the Ruger Mini's shoot for crap. Now mine shoots sub MOA.
Here is a post along with one of my targets using the "Biathlon".
http://www.perfectunion.com/forums/index.php?showtopic=13175&st=0&#entry89239

thanks gixxer, great article.

Limbsaver is offering a Barrel De-Resonator that is suppose to dampen vibrations and increase accuracy. I recently shot a Browning A-Bolt Hunter in 223 Rem to determine if an average user could put one of these on their gun and gain accuracy as they claim. Limbsaver recommends placing the De-Resonator close to the end of the barrel or close to the forearm. I shot 3 different types of ammo, the group sizes are as follows:



A-Bolt 223 Rem Hornady 55gr
V-Max Winchester USA
45 gr JHP Federal Premium
55gr Ballistic Tip
No Limbsaver 0.75†1.19†2.78â€
End of Barrel 0.73†1.67†1.26â€
By Forearm 1.51†0.78†2.35â€
It does not appear that the claims by Limbsaver bear out in my limited experimentation. Only the Federal ammo was improved by the De-Resonator, but those groups are not worth bragging about. At best, the De-Resonator works as a sliding weight that follows the principal of the BOSS system. A person may be able to obtain better accuracy with any load, but would require experimentation.

Aaron

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Originally posted by steve4102:
I have not tried the "LimbSaver" tuner but, I do have a "Biathlon Stabilizer" in my Mini-30. http://www.henrich3.com/biathalon_stabilizer.htm
This device has taken a 2.5 to 3 inch rifle and turned into a sub MOA tack driver. It was originally designed to the Biathlon Shooting team, and it works. As most of you know the Ruger Mini's shoot for crap. Now mine shoots sub MOA....

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Hey Steve, Just looked at the Henrich Biathlon Stabilizer and it does look like a fine idea to me. Same basic concept for Fine Tuning the barrel harmonic as the BOSS, but you can use the Henrich without a lot of hassle.

I remember many years ago when the old High Standard pistols had adjustable barrel weights. At that time I thought it was simply adjusting the "Balance Point", but perhaps it was also affecting the harmonics of those excellent pistols as well.

Thanks for the Link.